Scientists in Canada have documented a rare case of female polar bear adopting a new cub, an episode of curious behavior that highlights the complex relationships among the apex Arctic predators. Researchers tracking a female polar bear known as X33991 noticed she had gained a second cub who likely needed help. The adoption was confirmed by Polar Bears International, a non-profit conservation group, after the bear was initially spotted with one young cub in the spring and then with two cubs of roughly the same age last month.

According to Evan Richardson, a research scientist with Environment and Climate Change Canada, female polar bears are "really good moms" and are "primed for looking after and caring for their offspring." Richardson noted that if a little cub is bawling on the coast and has lost its mother, these females "just can't help themselves but to take them on and look after them." This behavior is a "really curious" aspect of polar bear relationships, Richardson said.

The adoption is a rare occurrence, as female polar bears typically only care for their own offspring. However, in cases where a cub has lost its mother, other females may take on a nurturing role. Richardson emphasized that this behavior is not unique to polar bears, as many female mammals will adopt and care for young that are not their own.

Polar Bears International has been tracking the bear and her adopted cub using GPS technology. The organization's efforts aim to better understand the behavior and social dynamics of polar bears in the wild. By studying these complex relationships, researchers can gain valuable insights into the impact of climate change on polar bear populations.

The adoption of the cub highlights the importance of female polar bears in the Arctic ecosystem. As Richardson noted, "female polar bears are really good moms," and their ability to care for and nurture their young is crucial to the survival of the species. The rare case of adoption also underscores the complex social dynamics of polar bears, which are often misunderstood as solitary animals.

The current status of the bear and her adopted cub is being monitored by Polar Bears International. The organization will continue to track the bear's movements and behavior, providing valuable insights into the complex relationships among polar bears in the wild.